Paper forming machine



May 2, 1933 2;. SMITH PAPER FORMING MACHINE Filed Sept. 29. 1930 2 Sheets-Sheet 2 Fig.

48 Fig 5 N sill-=2:

,jwmntoz Swan fimich invention,

tions as the case maybe.

Patented May 2; 193 3 stares SWAIT SMITH, 0F

fAPlER FORMING MACHINE Application filed September 29, 1930.

*ion relates LO methods of and apor longitudinally grooving strips r paper and has for an object to rovoment in the method of In employing the ,1 co-pending application in the g" of a substan number of parallel es longitudinally of a strip or sheet of 'nferior aper, it as been noted that tends to fra sure, between the inaccount of'the relati eupon the comparativet the central Zone thereof, athering of the sheet such zone. V

J t of my present invention is to make such provision will reduce such stresses in the gathering of the paper and thereby pe mit of the utilization of relatively ineiipen without the danger of such paper being torn oor erwise n ured in the gathering and forming thereof.

' As iii the -'-on disclosed in my said co-pending iCltlQIl material gathered long a cent a= zone of amoving sheet of seer by means of gathering rolls designed -allv to artn form the innermost of the ultimately to be formed inthe strip grooves being later completely formed Y inn of stool: and

the partial formation of In the present invention, I employ a pair of initial rolls designed solely for "the p'ur-' pose of gathering stock at the center of the moving sheet, one roll having a relatively large gradually curved bulge thereon; and the other roll havmg a groove corresponding with and cooperating with saidbulge. These ior forming sheets with lon-v No'K-lfJ-ASF) filed Febru-' method and apparatus forming rolls concurrently with the gath- A rooves therein alongzones at either side 7 Serial No. l85,005.

the stock isavailable, Without strain, for the f formation of the offsets and the ultimate grooves the subsequent gathering and forming rolls. 1

Another object of the invention resides in providinga'device for adjusting the spacing of the initial gathering rolls to varyithe quantity of material gathered thereby; Other objects of. the invention reside in the novel combination and arrangement of parts and in the details of construction'hereinafter illustrated and/0r described. In the draWingsL Figural is a plan View of a machine illustrating a structural embodiment of my invention; r a v, Figure2 is an elevational viewof the structure shown in Figurel with some" of the gearingremoved to illustrate the method of ournaling the rolls.

' Figure 3 is an eievational sectional View taken on line 8+3 of Figure 1. l i Figure 4: is across sectional vievvtaken 0n the line H of Figure 1. -v 3 Figure 5 is a fragmentary elevational' sectional view taken on theline 5-5 of Figure :2 and drawn to a larger scale. 7 I Figuref G is a plan's'ectional view of the structure shown in Figurefi taken on line 6+6 of Figure 2.

"My improved 'n1ethod and machine are capable of numerous, uses 1 and applications and are especially useful inthe manufacture vof grooved egg flats constructed as shown in my said application, )Elerial No 343,495, and which involve'in strip. or sheet of p paper stock; 7 I The mach ne illustrated inthe drawings and 11 v transverse bars 12, 13 and14 secured to said longitudinal frame membersby means of bolts v 16. 'The frame members 10 and 11 are provided with legs 15. for supporting the machine their development the for matron of longitudinal grooves injamoving V Betweenthe two frame members 10' WHITE BEAR, ixrmnirsora, ASSIGNOR TO oiin rna coaronarron, or CHICAGO, ILLINOIS, A oonroaar on or -.rnarnois includes two longitudinal frame members 10 connected bymeaifis of a number ofr are journaled in bearings35 mounted on the frame members and 11.; The upper rolls to 32 inclusive are similarly constructed with trunnions 36 journaled in bearings 38 which are movable within openings 47formed in the frame members 10 and 11 directly above the bearings 35. Thus movable, the'bearings 38 may be moved toward and from the bear ings to vary the distance between the rolls of the different pairs thereof. The bearings 38 are constructed with vertical slots which receive guides 51embodied in the frame members 10"and 11. pairs are normally held apart by means of coil springs 42 (Figure 5) which are seated in sockets 43 in the bearings38 and in corresponding sockets 44 in the bearings 35. B applying pressure to the bearings 38 they may be forced downwardly along the guides 51 toward the bearings 35 in opposition to the springs 42. to vary the distance hetween'the upper and lower rolls of thejdiiferent pairs thereof. a

For the purpose of maintaining the rolls in adjusted position, each of the frame members 10 and 11 is provided with a longitudinal bar 45 resting upon the upper edge thereof. These bars are secured tothe frame members 10 and 11 bymeans of bolts 46 screwed into the portions 37 thereof between the openings 47. Centrally disposed with 'respect to said openings 47 are adjusting in a manner now to be screws 48 threaded into the bars 45 in positions immediately above the bearings 38. By turning th-ese screws 48 in one direction, the bearings 38 may be depressed toward the bearings35 in opposition to the springs 42 and, y turning said screws in the opposite direction a reverse movement of said bearings may be had through the action of said springs. Thus the various rolls may be quickly and accurately-adjusted relative to one another at will. Holding 7 the adjusting screws 48 in locked position are lock nuts 49 which are threaded upon said screws and seated against the bars 45.

The various rolls 17 to 24 inclusive are all driven in a counterclockwise direction as viewed in Figure 2 and at the same rate of speed. The rolls 25 to 32 inclusive are driven in a-clockwise direction and at the same rate of speedwith respect to each other and to the rolls 17 to 24 inclusive. By means of suchrotation, a strip or sheet inserted between the variousro-lls is continuously fed and moved along between them and is formed explained.

and immediately The rolls of the different driven through said between theadj oining The roll 32 (Figures 1 and 3) is formed in an offset relation with respect to one anrolls 32 and 24, a gathering of stock occurs at the center thereof in the formation in the sheet of offset portions which are subsequently finally formed into grooves.

The roll 31 (Figures 1 and 3), succeeding roll 32, is provided with two annular beads 64 andv 65 of cross sectional shape and form corresponding with the finished grooves of the sheet. These heads are arranged substantially in alignment with the shoulders 52 and 53 of the preceding roll and finally form the ultimate inside grooves of the sheet in a manner to utilize the stock offset by the shoulders 52 and 53 as previously brought out. Theroll 23, complementing roll 31, is formed with grooves 56 (Figure 3) co- I operating with the beads 64 and 65 of said roll 31- in finishing said grooves. Upon the succeeding rolls 25 to 30 inclusive are formed similar beads 67 and 68, aligned with the beads 64 and 65, which retain the shape of the grooves finally formed by the beads 64 and 65. These latter beads cooperate with grooves 69 formed in the complemental rolls 17 to 22 inclusive. 7 V VVhere more than two grooves are to be formed in the sheet and such grooves are to be progressively constructed, as pointed out in my said co pen ding application, additional shoulders 70, 71, 72, 73, etc., may be formed on the various upper rolls, as best shown in Figure 1, and correspondingly formed beads constructed on the lower rolls.

For the purpose of feeding the sheet between the upper and lower rolls, the portions 74of the various rolls disposed between the respectivebeads and shoulders thereof are of such diameter as to engage the stock and advance it into the machine. The outer portions 75 of the rolls are smaller in diameter than the portions 74 so that the stockmay be readily gathered inwardly from the sides of the strip or sheet as it is advanced and the grooves formed therein.

The drive for the various rolls is best shown in Figure 2. To the trunnions 36 of all of the rolls 25 to 32 inclusive, are secured. These spur gears mesh with corresponding spur gears 78 on the trunnions 33 of the rolls 1'? to 24 inclusive. These spur gears 77 and'78 have a pitch diameter equal to the distance between the axes of the cooperating rolls so that when said rolls are gears, all of the rolls travel at the same rate of speed. Interposed gears 78 are idler gears 79 which mesh with the gears 78 causing all of these gears to travel These idler gears are mounted'upon stud spur gears 77 other so that as a sheet passes between the V in the same direction.

brackets are threaded I disposed screws 100, best shown lIrFlgUl'BS.

.center thereof, is formed shafts attached to theframe member 10 in any suitable manner. The train of gears, above described may be driven through any of the gears thereof by any suitable power transmission means. 7

In my presentinvention the previously describedmechanism two roll ers 81 and 82 which are mountedbetween the frame members 10' and 11 immediately in advance of the rollers 32 and 24'. These rollers are formed with trunnions 83 and 8t similar to the trunnions 33 and other rolls of the machine. 1 The trunnions 83 are journaled in bearings 85 secured to the frame members 10 and 11, while the trunnions 8a are journaled in bearings 86 slidably mounted on said frame members in the same manner as the bearings 38. The bearings 85 and 86 are urged apart through compression coil springs 87 seated in sockets 88 and 89 formedin said bearings 85 and 86. For the purpose of moving 82 together, brackets 90 are employed which are secured to the upper portions of the frame members 10 and 11 through'cap screws 91 in the same manner as the bars 45. These to receive vertically 2 and 1, which engage the bearings 86. To

the upper ends of these screws are secured worm wheels 101. the same being adapted to be rotated through worms 102 mounted on a transversely disposed shaft 103. The sha t'103 is journaled in bearings 10a formed in the brackets 90 and is adapted to be rotated by means of a crank 105 secured to one end of said shaft. Through the rotation of shaft 103, the screws 100 are turned si multaneously, causing the roll 81 to be raised or loweredwith respect to the roll 82 ac- "cording to the direction of rotation ofsaid shaft 103.

In advance of the rolls 81 and 82 is an idler roller 106 (Figure 2) which is provided with trunnions 107 at the ends thereof. These trunnions are journaled in bearings 108 attached to the frame members 10 and 11 by screws 109. This roller 106 directs paper from a roll or other source of supply to the rolls 81 and 82.

Upon the periphery of the roll 82, at the a relatively large gradually curved bulge 110, the length of this bulge axially of the roll 82 being substantially equal to the over all distance between the shoulders 52 and 53 of the roll 32 and serves to gather centrally of the sheet or strip suflicient stock to form the two grooves at the center of the sheet. The bulge 110 is gradually curved so that in the gathering of the stock, the sheet is not sharply distorted or bent. 7

tion with the bulge 110 is a groove 111 in the roll 81, which conforms with said bulge.

I associate with a 34 of the the rolls 81 and -with offsets and then with grooves, as

Operating in conjunc- These two. members operating 1 together gather the'stock of the sheet,"as'stated.

For driving the two rolls 81 and 82, the

trunnions 83 and 84 adjacent the side frame member 10are supplied with meshing spur 1 These gears are of equal gears 112 and 113. pitch diameter and of a diameter-equal to the meandiameterofzthe rolls so that said gears cause the rolls 81 and 82 to turn at the same rate of speech These rolls 81 and 82 are driven from the last of the series of gears 78 through an idler gear 114 of the same nature and' mounted in the same manner as the idlers 79. :In this construction, all of the rolls are driven in the proper directions to pulled from a roll, is first drawn-through a bathof water or steam and thence run over the roller 106 and through the trolls 81- and 82. As the strip or sheet of paper passes through said rolls 81 andj82," an appreciable is gathered cen portion of the paper stock trally of the strip or sheetto assist 11118116 subsequent paper. This gatheringof the" stock depends upon the relative disposition of the said rolls 81 and 82. the rolls will be near enough togetherso' that in addition to gatheringthe paper. stock-they 'Under ordinary circumstances,"

formation of the grooves in the,

will serve as a rin'g'erfor removing the sun plus water from'the paper before it enters-the forming rolls. By running the 7 through. the rolls 24:"and 32 and through the succeeding rolls," the sheet is first formed previpapgr .1 fl.

ously pointed out and as more fully disclosed in my said co-pendingapplication. Wham-" the paper finally leaves the machine; it is formed with a plurality of, grooves conforming in configuration to the various. beads on the former rolls: As previously stated, where the apparatus is to-be used in constructing certain types of egg flats, gthe sheet is subsequently. submittedto the operation of mechanism-for formingtransverse grooves therein. i V

My invention is 1 highly. advantageous in that an exceptionally low grade of; stock may be usedin the formation" 'ofeggflatswitliout appreciable danger, of the paper becoming torn in the gathering of the stool; preparatory to the, final formation ofthe ulti- "mate grooves." The amount o'f stoclr' gathered can be accurately regulated by adjusting the roll 81 with respect tothe roll. 82 and p I said rolls operate as wringer to zremov'e more or less ofthe surplus water fromthe paper. 7 I

Changes in the specific form ofinven- 7 tion, as herein described,:niay be made within the scope of what is claimed without departing from the splrit of myginvention Patent is from that by said shoulders, and a Having 'described my invention wha I claim as new and desire to protect by Letters 1. The method of forming in a. moving sheet an intermediate longitudinal groove, consisting in continually gathering a substantial amount of the stock ofthe sheet at the intended locality ofthe groove, without ap, preciably bending or suddenly distorting the sheet, and in thereafter forming the gathered stock to provide the groove therein.

2. The method of forming in a moving sheet an intermediate longitudinal,groove, consisting in gathering an appreciable amount of the stock of the'sheet at the intended locality of the groove, without appreciably bending the sheet, by forming a preliminary shallow groove in then bending the gathered portion ofthe stock to form an offset in the sheet at the locality of the groove, and in thereafter further forming said stockte pro vide the finished groove. a a V 5 3. In a machine for formingsheets withlongitudinal grooves therein, a number of pairs of complemental rolls, one of the rolls of the first pair having a relatively large gradually curved annuar bulge, the other thereof having a groove corresponding an'dcooperating with said bulge=to gather at the locality of the groove an appreciable amount of the stock of the sheet with-out appreciably bending'thesheet, the following pairs of rolls embodying. subsequently forming the grooves in the sheet portion thereof gathered by v the firstrolls. n l 'i 4; In a machine 'for'forming longitudinal grooves in'a sheetfa pair of complemental rolls provided with cooperating shoulders for partially forming previously gathered stock of the sheet, a second pair of rolls pro vided with'co-op'erating 'beadsand grooves for finally forming the I along that portion thereof partially formed pair of rolls inadvance ofsaid first named rolls, one of said rolls having a relatively large gradually curved bulge thereon and the other-thereof having a groove corresponding with said bulge, said groove'and bulge cooperating to gather the stock of the sheet preparatory to the action upon it ofsaid other rolls in the "ultimate formation of the grooves in the sheet.

' v 5. In a machine'for forming'sheets with longitudinal grooves therein, a number-50f of the first pair having a relatively large gradually curved bul roll having a groove bulge to gather atthe ultimate locality of the grooves a substantial amount of the stock gathering and forming means for grooves in said sheet frame for journaling a groove, gathering rolls, bearings fixed relative to said in gs movable rela sheet, an intermediate longitudinal ly forming the ,groovestin the sheet from the gathered portion thereof, and means for supporting said first named rolls in adjustable positionrelative to one another to vary the amount of stock gathered thereby.

6. I11 a machine forforming a sheet with a groove, a frame, a pair of complemental gathering rolls, bearings fixed relative to said framefor journaling one of said rolls, bearings movable relative to said frame for jour naling the other of said rolls,,means for hold: ing said bearingsin adjusted position to vary the distance between said rolls to regulate the amount of stock gathered by said rolls, andr means for forming the groove in the sheet from the portion thereof gathered by said, rolls. 7 V

7. In a machine for forming a sheet with a groove, a frame, a pair of complemental gathering rolls, bearings fixed relative to said one of said rolls, bearingsmovable relative to said frame for journaling the other of said rolls, and means for simultaneously raising and lowering said hearings to vary the distance between said rolls and regulate the amount of stock gathered thereby, and means for forming the groove in the sheet from thelportion thereof gathered by said rolls. d

8. In a, machine for forming a sheet with a frame, a pair of complemental frame for journalingone of said rolls, beartive to said frame for journaling :the other of said rolls, screws cooperating with said movable bearings for movng the same relative to said a fixed bearings, a shaft extending in proximity to both of said screws, gearing on said shaft and screws for simultaneously turning the screws, and means for forming the groove in the sheet from that portion thereof gathered by said rolls.

9. The method of forming in a moving groove, consistingin gathering the sheet at the intended locality of the groove by forming a preliminary shallow gradually curved groove of y a width considerably greater than its depth, the amount of stock gathered being substantially that required for the final groove, and in thereafter forming the preliminary groove to provide the final groove. In testimony whereof I have afiixed'my signature;

of the sheet without appreciably bending the" sheet, the other pairs of rolls "embodying gathering and forming means for subsequent sWANsMIrH.

vpairs'of complemental rolls, one of therolls ge thereon, and the other corresponding with said 

